German Cabbage and Sausage dish?

Mum was German, and she used to make a dish, which I still copy to this day. Its simply Savoy Cabbage leaves, layered in a saucepan with a mixture of sausagemeat, onions and breadcrumbs, Then water is poured over, an Oxo cube added, and its all boiled up for an hour. Its sliced up like a cake and served with boiled potatoes and the 'gravy' from the cabbage and sausage mix. Has anyone else heard of this? I've never seen it anywhere else.